<!doctype html>
<!DOCTYPE html><html><head><meta charset="utf-8">
    <title>小仙女张佳</title>
    <script src="js/jquery.min.js"></script>
  <style>
    * {
      padding: 0;
      margin: 0;
    }
    html,
    body {
      height: 100%;
      padding: 0;
      margin: 0;
      background: #000;
    }

    .aa {
      position: fixed;
      left: 50%;
      bottom: 10px;
      color: #ccc;
    }
    .img {
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      width: 440px;
      height: 430px;
    }
    .container {
      width: 100%;
      height: 100%;
    }
    canvas {
      z-index: 99;
      position: absolute;
      width: 100%;
      height: 100%;
    }
  </style></head>
  
  <body>
    <!-- 樱花 -->
    <div id="jsi-cherry-container" class="container">
      <audio autoplay="autopaly">
        <source src="media/renxi.mp3" type="audio/mp3">
      </audio>
      <img class="img" src="img/123.png" alt="">
      <!-- 爱心 -->
      <canvas id="pinkboard" class="container"> </canvas>
    </div>
    <script>
      /*
       * Settings
       */
      var settings = {
        particles: {
          length: 500, // maximum amount of particles
          duration: 2, // particle duration in sec
          velocity: 100, // particle velocity in pixels/sec
          effect: -0.75, // play with this for a nice effect
          size: 30, // particle size in pixels
        },
      };

      /*
       * RequestAnimationFrame polyfill by Erik M?ller
       */
      (function () {
        var b = 0;
        var c = ["ms", "moz", "webkit", "o"];
        for (var a = 0; a < c.length && !window.requestAnimationFrame; ++a) {
          window.requestAnimationFrame = window[c[a] + "RequestAnimationFrame"];
          window.cancelAnimationFrame =
            window[c[a] + "CancelAnimationFrame"] ||
            window[c[a] + "CancelRequestAnimationFrame"];
        }
        if (!window.requestAnimationFrame) {
          window.requestAnimationFrame = function (h, e) {
            var d = new Date().getTime();
            var f = Math.max(0, 16 - (d - b));
            var g = window.setTimeout(function () {
              h(d + f);
            }, f);
            b = d + f;
            return g;
          };
        }
        if (!window.cancelAnimationFrame) {
          window.cancelAnimationFrame = function (d) {
            clearTimeout(d);
          };
        }
      })();

      /*
       * Point class
       */
      var Point = (function () {
        function Point(x, y) {
          this.x = typeof x !== "undefined" ? x : 0;
          this.y = typeof y !== "undefined" ? y : 0;
        }
        Point.prototype.clone = function () {
          return new Point(this.x, this.y);
        };
        Point.prototype.length = function (length) {
          if (typeof length == "undefined")
            return Math.sqrt(this.x * this.x + this.y * this.y);
          this.normalize();
          this.x *= length;
          this.y *= length;
          return this;
        };
        Point.prototype.normalize = function () {
          var length = this.length();
          this.x /= length;
          this.y /= length;
          return this;
        };
        return Point;
      })();

      /*
       * Particle class
       */
      var Particle = (function () {
        function Particle() {
          this.position = new Point();
          this.velocity = new Point();
          this.acceleration = new Point();
          this.age = 0;
        }
        Particle.prototype.initialize = function (x, y, dx, dy) {
          this.position.x = x;
          this.position.y = y;
          this.velocity.x = dx;
          this.velocity.y = dy;
          this.acceleration.x = dx * settings.particles.effect;
          this.acceleration.y = dy * settings.particles.effect;
          this.age = 0;
        };
        Particle.prototype.update = function (deltaTime) {
          this.position.x += this.velocity.x * deltaTime;
          this.position.y += this.velocity.y * deltaTime;
          this.velocity.x += this.acceleration.x * deltaTime;
          this.velocity.y += this.acceleration.y * deltaTime;
          this.age += deltaTime;
        };
        Particle.prototype.draw = function (context, image) {
          function ease(t) {
            return --t * t * t + 1;
          }
          var size = image.width * ease(this.age / settings.particles.duration);
          context.globalAlpha = 1 - this.age / settings.particles.duration;
          context.drawImage(
            image,
            this.position.x - size / 2,
            this.position.y - size / 2,
            size,
            size
          );
        };
        return Particle;
      })();

      /*
       * ParticlePool class
       */
      var ParticlePool = (function () {
        var particles,
          firstActive = 0,
          firstFree = 0,
          duration = settings.particles.duration;

        function ParticlePool(length) {
          // create and populate particle pool
          particles = new Array(length);
          for (var i = 0; i < particles.length; i++)
            particles[i] = new Particle();
        }
        ParticlePool.prototype.add = function (x, y, dx, dy) {
          particles[firstFree].initialize(x, y, dx, dy);

          // handle circular queue
          firstFree++;
          if (firstFree == particles.length) firstFree = 0;
          if (firstActive == firstFree) firstActive++;
          if (firstActive == particles.length) firstActive = 0;
        };
        ParticlePool.prototype.update = function (deltaTime) {
          var i;

          // update active particles
          if (firstActive < firstFree) {
            for (i = firstActive; i < firstFree; i++)
              particles[i].update(deltaTime);
          }
          if (firstFree < firstActive) {
            for (i = firstActive; i < particles.length; i++)
              particles[i].update(deltaTime);
            for (i = 0; i < firstFree; i++) particles[i].update(deltaTime);
          }

          // remove inactive particles
          while (
            particles[firstActive].age >= duration &&
            firstActive != firstFree
          ) {
            firstActive++;
            if (firstActive == particles.length) firstActive = 0;
          }
        };
        ParticlePool.prototype.draw = function (context, image) {
          // draw active particles
          if (firstActive < firstFree) {
            for (i = firstActive; i < firstFree; i++)
              particles[i].draw(context, image);
          }
          if (firstFree < firstActive) {
            for (i = firstActive; i < particles.length; i++)
              particles[i].draw(context, image);
            for (i = 0; i < firstFree; i++) particles[i].draw(context, image);
          }
        };
        return ParticlePool;
      })();

      /*
       * Putting it all together
       */
      (function (canvas) {
        var context = canvas.getContext("2d"),
          particles = new ParticlePool(settings.particles.length),
          particleRate =
            settings.particles.length / settings.particles.duration, // particles/sec
          time;

        // get point on heart with -PI <= t <= PI
        function pointOnHeart(t) {
          return new Point(
            160 * Math.pow(Math.sin(t), 3),
            130 * Math.cos(t) -
              50 * Math.cos(2 * t) -
              20 * Math.cos(3 * t) -
              10 * Math.cos(4 * t) +
              25
          );
        }

        // creating the particle image using a dummy canvas
        var image = (function () {
          var canvas = document.createElement("canvas"),
            context = canvas.getContext("2d");
          canvas.width = settings.particles.size;
          canvas.height = settings.particles.size;
          // helper function to create the path
          function to(t) {
            var point = pointOnHeart(t);
            point.x =
              settings.particles.size / 2 +
              (point.x * settings.particles.size) / 350;
            point.y =
              settings.particles.size / 2 -
              (point.y * settings.particles.size) / 350;
            return point;
          }
          // create the path
          context.beginPath();
          var t = -Math.PI;
          var point = to(t);
          context.moveTo(point.x, point.y);
          while (t < Math.PI) {
            t += 0.01; // baby steps!
            point = to(t);
            context.lineTo(point.x, point.y);
          }
          context.closePath();
          // create the fill
          context.fillStyle = "#ea80b0";
          context.fill();
          // create the image
          var image = new Image();
          image.src = canvas.toDataURL();
          return image;
        })();

        // render that thing!
        function render() {
          // next animation frame
          requestAnimationFrame(render);

          // update time
          var newTime = new Date().getTime() / 1000,
            deltaTime = newTime - (time || newTime);
          time = newTime;

          // clear canvas
          context.clearRect(0, 0, canvas.width, canvas.height);

          // create new particles
          var amount = particleRate * deltaTime;
          for (var i = 0; i < amount; i++) {
            var pos = pointOnHeart(Math.PI - 2 * Math.PI * Math.random());
            var dir = pos.clone().length(settings.particles.velocity);
            particles.add(
              canvas.width / 2 + pos.x,
              canvas.height / 2 - pos.y,
              dir.x,
              -dir.y
            );
          }

          // update and draw particles
          particles.update(deltaTime);
          particles.draw(context, image);
        }

        // handle (re-)sizing of the canvas
        function onResize() {
          canvas.width = canvas.clientWidth;
          canvas.height = canvas.clientHeight;
        }
        window.onresize = onResize;

        // delay rendering bootstrap
        setTimeout(function () {
          onResize();
          render();
        }, 10);
      })(document.getElementById("pinkboard"));
    </script>

    <script>
      var RENDERER = {
        INIT_CHERRY_BLOSSOM_COUNT: 30,
        MAX_ADDING_INTERVAL: 10,

        init: function () {
          this.setParameters();
          this.reconstructMethods();
          this.createCherries();
          this.render();
          if (
            navigator.userAgent.match(
              /(phone|pod|iPhone|iPod|ios|Android|Mobile|BlackBerry|IEMobile|MQQBrowser|JUC|Fennec|wOSBrowser|BrowserNG|WebOS|Symbian|Windows Phone)/i
            )
          ) {
            // var box = document.querySelectorAll(".box")[0];
            // console.log(box, "移动端");
            // box.style.marginTop = "65%";
          }
        },
        setParameters: function () {
          this.$container = $("#jsi-cherry-container");
          this.width = this.$container.width();
          this.height = this.$container.height();
          this.context = $("<canvas />")
            .attr({ width: this.width, height: this.height })
            .appendTo(this.$container)
            .get(0)
            .getContext("2d");
          this.cherries = [];
          this.maxAddingInterval = Math.round(
            (this.MAX_ADDING_INTERVAL * 1000) / this.width
          );
          this.addingInterval = this.maxAddingInterval;
        },
        reconstructMethods: function () {
          this.render = this.render.bind(this);
        },
        createCherries: function () {
          for (
            var i = 0,
              length = Math.round(
                (this.INIT_CHERRY_BLOSSOM_COUNT * this.width) / 1000
              );
            i < length;
            i++
          ) {
            this.cherries.push(new CHERRY_BLOSSOM(this, true));
          }
        },
        render: function () {
          requestAnimationFrame(this.render);
          this.context.clearRect(0, 0, this.width, this.height);

          this.cherries.sort(function (cherry1, cherry2) {
            return cherry1.z - cherry2.z;
          });
          for (var i = this.cherries.length - 1; i >= 0; i--) {
            if (!this.cherries[i].render(this.context)) {
              this.cherries.splice(i, 1);
            }
          }
          if (--this.addingInterval == 0) {
            this.addingInterval = this.maxAddingInterval;
            this.cherries.push(new CHERRY_BLOSSOM(this, false));
          }
        },
      };
      var CHERRY_BLOSSOM = function (renderer, isRandom) {
        this.renderer = renderer;
        this.init(isRandom);
      };
      CHERRY_BLOSSOM.prototype = {
        FOCUS_POSITION: 300,
        FAR_LIMIT: 600,
        MAX_RIPPLE_COUNT: 100,
        RIPPLE_RADIUS: 100,
        SURFACE_RATE: 0.5,
        SINK_OFFSET: 20,

        init: function (isRandom) {
          this.x = this.getRandomValue(
            -this.renderer.width,
            this.renderer.width
          );
          this.y = isRandom
            ? this.getRandomValue(0, this.renderer.height)
            : this.renderer.height * 1.5;
          this.z = this.getRandomValue(0, this.FAR_LIMIT);
          this.vx = this.getRandomValue(-2, 2);
          this.vy = -2;
          this.theta = this.getRandomValue(0, Math.PI * 2);
          this.phi = this.getRandomValue(0, Math.PI * 2);
          this.psi = 0;
          this.dpsi = this.getRandomValue(Math.PI / 600, Math.PI / 300);
          this.opacity = 0;
          this.endTheta = false;
          this.endPhi = false;
          this.rippleCount = 0;

          var axis = this.getAxis(),
            theta =
              this.theta +
              (Math.ceil(
                -(this.y + this.renderer.height * this.SURFACE_RATE) / this.vy
              ) *
                Math.PI) /
                500;
          theta %= Math.PI * 2;

          this.offsetY =
            40 * (theta <= Math.PI / 2 || theta >= (Math.PI * 3) / 2 ? -1 : 1);
          this.thresholdY =
            this.renderer.height / 2 +
            this.renderer.height * this.SURFACE_RATE * axis.rate;
          this.entityColor = this.renderer.context.createRadialGradient(
            0,
            40,
            0,
            0,
            40,
            80
          );
          this.entityColor.addColorStop(
            0,
            "hsl(330, 70%, " + 50 * (0.3 + axis.rate) + "%)"
          );
          this.entityColor.addColorStop(
            0.05,
            "hsl(330, 40%," + 55 * (0.3 + axis.rate) + "%)"
          );
          this.entityColor.addColorStop(
            1,
            "hsl(330, 20%, " + 70 * (0.3 + axis.rate) + "%)"
          );
          this.shadowColor = this.renderer.context.createRadialGradient(
            0,
            40,
            0,
            0,
            40,
            80
          );
          this.shadowColor.addColorStop(
            0,
            "hsl(330, 40%, " + 30 * (0.3 + axis.rate) + "%)"
          );
          this.shadowColor.addColorStop(
            0.05,
            "hsl(330, 40%," + 30 * (0.3 + axis.rate) + "%)"
          );
          this.shadowColor.addColorStop(
            1,
            "hsl(330, 20%, " + 40 * (0.3 + axis.rate) + "%)"
          );
        },
        getRandomValue: function (min, max) {
          return min + (max - min) * Math.random();
        },
        getAxis: function () {
          var rate = this.FOCUS_POSITION / (this.z + this.FOCUS_POSITION),
            x = this.renderer.width / 2 + this.x * rate,
            y = this.renderer.height / 2 - this.y * rate;
          return { rate: rate, x: x, y: y };
        },
        renderCherry: function (context, axis) {
          context.beginPath();
          context.moveTo(0, 40);
          context.bezierCurveTo(-60, 20, -10, -60, 0, -20);
          context.bezierCurveTo(10, -60, 60, 20, 0, 40);
          context.fill();

          for (var i = -4; i < 4; i++) {
            context.beginPath();
            context.moveTo(0, 40);
            context.quadraticCurveTo(i * 12, 10, i * 4, -24 + Math.abs(i) * 2);
            context.stroke();
          }
        },
        render: function (context) {
          var axis = this.getAxis();

          if (
            axis.y == this.thresholdY &&
            this.rippleCount < this.MAX_RIPPLE_COUNT
          ) {
            context.save();
            context.lineWidth = 2;
            context.strokeStyle =
              "hsla(0, 0%, 100%, " +
              (this.MAX_RIPPLE_COUNT - this.rippleCount) /
                this.MAX_RIPPLE_COUNT +
              ")";
            context.translate(
              axis.x +
                this.offsetY * axis.rate * (this.theta <= Math.PI ? -1 : 1),
              axis.y
            );
            context.scale(1, 0.3);
            context.beginPath();
            context.arc(
              0,
              0,
              (this.rippleCount / this.MAX_RIPPLE_COUNT) *
                this.RIPPLE_RADIUS *
                axis.rate,
              0,
              Math.PI * 2,
              false
            );
            context.stroke();
            context.restore();
            this.rippleCount++;
          }
          if (axis.y < this.thresholdY || !this.endTheta || !this.endPhi) {
            if (this.y <= 0) {
              this.opacity = Math.min(this.opacity + 0.01, 1);
            }
            context.save();
            context.globalAlpha = this.opacity;
            context.fillStyle = this.shadowColor;
            context.strokeStyle =
              "hsl(330, 30%," + 40 * (0.3 + axis.rate) + "%)";
            context.translate(
              axis.x,
              Math.max(axis.y, this.thresholdY + this.thresholdY - axis.y)
            );
            context.rotate(Math.PI - this.theta);
            context.scale(axis.rate * -Math.sin(this.phi), axis.rate);
            context.translate(0, this.offsetY);
            this.renderCherry(context, axis);
            context.restore();
          }
          context.save();
          context.fillStyle = this.entityColor;
          context.strokeStyle = "hsl(330, 40%," + 70 * (0.3 + axis.rate) + "%)";
          context.translate(
            axis.x,
            axis.y + Math.abs(this.SINK_OFFSET * Math.sin(this.psi) * axis.rate)
          );
          context.rotate(this.theta);
          context.scale(axis.rate * Math.sin(this.phi), axis.rate);
          context.translate(0, this.offsetY);
          this.renderCherry(context, axis);
          context.restore();

          if (this.y <= -this.renderer.height / 4) {
            if (!this.endTheta) {
              for (
                var theta = Math.PI / 2, end = (Math.PI * 3) / 2;
                theta <= end;
                theta += Math.PI
              ) {
                if (this.theta < theta && this.theta + Math.PI / 200 > theta) {
                  this.theta = theta;
                  this.endTheta = true;
                  break;
                }
              }
            }
            if (!this.endPhi) {
              for (
                var phi = Math.PI / 8, end = (Math.PI * 7) / 8;
                phi <= end;
                phi += (Math.PI * 3) / 4
              ) {
                if (this.phi < phi && this.phi + Math.PI / 200 > phi) {
                  this.phi = Math.PI / 8;
                  this.endPhi = true;
                  break;
                }
              }
            }
          }
          if (!this.endTheta) {
            if (axis.y == this.thresholdY) {
              this.theta +=
                (Math.PI / 200) *
                (this.theta < Math.PI / 2 ||
                (this.theta >= Math.PI && this.theta < (Math.PI * 3) / 2)
                  ? 1
                  : -1);
            } else {
              this.theta += Math.PI / 500;
            }
            this.theta %= Math.PI * 2;
          }
          if (this.endPhi) {
            if (this.rippleCount == this.MAX_RIPPLE_COUNT) {
              this.psi += this.dpsi;
              this.psi %= Math.PI * 2;
            }
          } else {
            this.phi += Math.PI / (axis.y == this.thresholdY ? 200 : 500);
            this.phi %= Math.PI;
          }
          if (this.y <= -this.renderer.height * this.SURFACE_RATE) {
            this.x += 2;
            this.y = -this.renderer.height * this.SURFACE_RATE;
          } else {
            this.x += this.vx;
            this.y += this.vy;
          }
          return (
            this.z > -this.FOCUS_POSITION &&
            this.z < this.FAR_LIMIT &&
            this.x < this.renderer.width * 1.5
          );
        },
      };
      $(function () {
        RENDERER.init();
      });
    </script>
  

</body></html>